Akira is smart, serious and polite while his twin brother, Isagi is completely the opposite. Isagi is playful, rough and rude. Akira and Isagi got a new roommate since their old roommate couldn't keep up with Isagi, because he's always the noisy one in the house. Akira would always keep being in control in the house since Isagi is being too lazy and irresponsible to even move around the house.